Flow Control of Active and Passive Combination of D-Shaped Bluff Body

doi:10.11908/j.issn.0253-374x.19185

Home > Archive>Volume 48, Issue 4, 2020 >566-574. DOI:10.11908/j.issn.0253-374x.19185

Flow Control of Active and Passive Combination of D-Shaped Bluff Body
DOI:
                        10.11908/j.issn.0253-374x.19185
                    
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                        YANG Zhigang1,2,3YANG Zhigang
Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China;Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University,Shanghai 201804, China;Beijing Aeronautical Science and Technology Research Institute, Beijing 102211, China
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HAN Yekai1,2HAN Yekai
Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China;Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University,Shanghai 201804, China
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LI Qiliang1,2LI Qiliang
Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China;Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University,Shanghai 201804, China
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SHAN Xizhuang1,2SHAN Xizhuang
Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China;Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University,Shanghai 201804, China
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Affiliation:1.Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China;2.Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University,Shanghai 201804, China;3.Beijing Aeronautical Science and Technology Research Institute, Beijing 102211, China
Clc Number:U467.1
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Abstract:

To explore the flow field of the vehicle and the strategies of drag reduction, this paper focuses mainly on numerical simulation of the flow structures of D-shaped bluff body. Based on the theory of zero mass synthetic jet, it studies the active flow control and the active-passive flow control of D-shaped bluff body. It is found that high frequency jet can reduce the drag of D-shaped bluff body, and the maximum drag reduction can reach 1.78%. The combination of active and passive splitter plates with tabs and synthetic jet strengthens the three-dimensional flow structure of wake, impedes the extended flow structure in the wake of quasi-three-dimensional model, and makes the drag reduction perform better. The drag reduction effect is 20.86% at low frequencies and 21.20% at high frequencies.

Key words:D-shaped bluff body;drag reduction;active control;synthetic jet

Reference

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YANG Zhigang, HAN Yekai, LI Qiliang, SHAN Xizhuang. Flow Control of Active and Passive Combination of D-Shaped Bluff Body[J].同济大学学报(自然科学版),2020,48(4):566~574

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Received:May 14,2019
Revised:February 25,2020
Adopted:February 11,2020
Online: April 24,2020
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